1: To much lines and not enough background, it makes the sig come out in a LQ and not to mention no background to blend the render into, overall though I give you a 6/10
2: I like it, it's blended nicely, you could've sharpened around the render to make it stand out more but overall I'll give you a 8/10
3: All I can see is lines sharpened with a little smudge and text can you please explain what this signature is supposed to look like, thank you.